Archive for genetics

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1953 – DNA – Watson and Crick

In 1953, James Watson and Francis Crick published an article in the journal, “Nature”. The article, titled “Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid”, described the DNA double helix structure which stores and replicates genetic information. When the two identical halves of the helix separate, the chemical bonds which held them […]

2003 – Human Genome project completed

The Human Genome Project – [genome.gov] The Human Genome Project (HGP) was one of the great feats of exploration in history – an inward voyage of discovery rather than an outward exploration of the planet or the cosmos; an international research effort to sequence and map all of the genes – together known as the […]

1938 – telomeres

In 1938 Hermann Muller coined the word, “telomere” (from the greek roots of tel and mere) to describe small end caps on the chromosomes of fruit flies. Two years later, Barbara McClintock, working independently on genetic research with maize, discovered that without the end caps, chromosomes can become stuck together, causing damage. It is now […]

1822 – Mendel – bio

Born in 1822 in Austria, Gregor Johann Mendel founded the science of genetics. Mendel grew pea plants and studied variations in them. He conceived of pairs of heredity “factors” (which would later be called genes) that create dominant and recessive traits in inheritance. At the time, chromosomes had just been discovered, but there was not […]

Rebuilding Our Bodies

We now have the ability to rebuild our bodies; at least in a limited sense, but that limitation is shrinking rapidly. Prosthetic Replacements Artificial replacement limbs and dentures have been used for thousands of years. Roman Capua Leg – [wikipedia.org] Prosthetic replacements have dramatically improved their functionality and their human-like appearance with increases in technological […]